Centre for Sustainable Chemical Technologies

New insights could lead to higher voltage batteries

Wed Jan 23 10:48:00 GMT 2013

Crystal structureCSCT member Professor Saiful Islam, with collaborators at the University of Tokyo, has published key results in Angewandte Chemie, which could lead to higher voltage lithium batteries.

Rechargeable lithium batteries have helped power the portable revolution in mobile phones, laptops and MP3 players. New generations of lithium batteries are being developed for hybrid and electric vehicles, but new sustainable materials are crucial.

Now John Clark and Saiful Islam at Bath in collaboration with Atsuo Yamada’s group at the University of Tokyo, have gained important atomic-scale insights into a novel iron pyrophosphate compound, which has the highest voltage of all known Fe-based phosphate electrodes.

The research team used a powerful combination of structural experiments and atomistic simulations to unravel, for the first time, the local disorder and 2D lithium diffusion paths, which are important for good charge/discharge rates.

This work provides a valuable framework for the future design of high voltage materials for next-generation lithium batteries.